Rebreathing bag



June 8, 1943. F SHELTON n 2,3;2',256

REBREATHING BAG Filed May 2*'5, 1942 ,1 v f' l 'g' i' "'/f INVENTORY l BY F1. oRf/vcfLs/faro/Y (JI l I u ATTORNEY.'

Patented June 8, 1943 OFFICER? REBREAIYHING BAG FlorencevL. Shelton, Portland, Oreg.

Application May 25, 1942, Serial No. 444,322

(Cl. 12S-205) 2 Claims.

This invention relates generally to devices for' administering gases to a patient, and particularly to a rebreathing bag.

The main object of this invention is to'construct a rebreathing bag which will be so inexpensive to manufacture that it will be practical to limit the use of same to one application, or to the exclusive private use of a given patient for obvious sanitary reasons.

The second object is to so construct the bag that it can be adjusted to t any size or variation of facial contour, and in which the connection between the bag and the respiratory tract is made without the usual tube and face mask and in a manner that the seal between the bag and the facial openings may -be maintained by the hands of the patient or a nurse, or with the aid of adhesives. A

The third object is to construct a device of the class described which will not only eliminate the need for a rubber hose connection but will also avoid the inconvenience and discomfort ordinarily occasioned by the length of tubing and its weight, and also avoiding the necessity of sterilizing such tubing between applications to two different patients.

The fourth object is to construct a bag of the class described in a manner that the inlet and outlet openings are on the same side of the bag which will normally lie close to the body of the patient.

The fifth object is to construct a bag of the class described in which the openings in the bag fits comfortably around the top of the nose and under the chin, and in which the projecting lateral flaps extend along the cheeks for holding purposes, either manually or otherwise.

The sixth object is to construct a bag of the class described which, prior to its use. can be maintained in a sealed, sanitary condition with its inlet and outlet openings protected against contamination from any source.

These and other objects are accomplished in the manner set forth in the following specification, as illustrated in the accompanying drawing, in which:

Fig. 2 is an inverted plan view of the bag illustrated in Figg`1`. v

Fig. 3 is an edge view of the'bagillustrated inFig. 1.

Fig. 4 is a view showing the rebreathing bag sealed prior to use. K

Fig. 5 is a phantom view showing in dotted lines a patient and a representative manner of using the bag which is shown in full lines.

Fig. 6 is a transverse section through a gas inlet opening showing a, modified form of attachment for the gas supply hose.

Similar numerals refer to similar parts throughout the several views.

Referring in detail to the drawing, there is shown a paper bag I which in this instance is an ordinaryjpaper bag known to the trade as a No. lofbag, having the flat and normally horizontal bottom 2.

vThe upper portion 3 of the bag is cut away along a substantially horizontal edge 4 which is upturned along the linetoward the vpoint 5-A on the original bag edge 5'-B. The edges 6 and G--A of the bag I are Vertical, the latter extending from the Ibottom 2 to the line 4. A seam of stitching or adhesive 'l extends along the edges 4 and 5.

The sloping edges 8 connect the point 5-A with the upper portion 9 of the vertical edge 6, forming the flaps I0 and II by means of which the breathing opening Itl-A may be held in position.

Along the length of the edge 6 is formed a notch I I-A around which are formed the seams I2 and I3, while the seam I4 extends upwardly along the edge 9 to the point I5 for juvenile use, or can be opened downwardly toward the seam I3 for adult use, in which case the wall I3-A formed by the seam I3 engages the underside of the patients chin.

'Ihe bottom 2 is provided with a gas inlet open ing I6 adjacent to the edge 6. Through the inlet Fig. 1 is a side View of one of my new and irnproved bags with the side wall at the bottom of the bag being broken away to show the gas supplying tube in position and to illustrate the method of attaching the tube to the bottom oi the bag, and showing in dotted lines the relative position of the faceand the bag.

opening I6 is inserted the tube I'I whose head I8 is on. the interior of the bag while the locking washer I9 is on the exterior of the bag. 'Ihe opening 20 communicates with the interior of the bag I. A ring 2Iis formed around the tube I1 to insure a proper fastening with the hose 22 which connects with the gas supply tank 23.

It is desirable to aix a tab 24 to one edge of the bottom 2 by means of which the bag may be held in closed condition with its inlet and outlet openings protectedas shown in Fig. 4, the unbroken seal 24 indicating that the bag has not been previously used.

In the form of the device shown in Fig. 6, a

. piece of heavy berboard or similar material 25 is provided with an opening 26 which registers with an opening I6 in the bag bottom 2, and is made to adhere to the bottom 2 by means of an adhesive fastener 21., In this case the hose 22 is fitted with a nipple 28 whose ends 29 are threaded, one end being threaded into the hose 22 and the other, into the opening 28 in the fiberboard 25.

It will be understood that the opening 26 is made suiciently large to receive the bottom of the thread on the nipple 23. vice has the advantage of permitting the bags to lay perfectly ilat, and also that the only part of the permanent equipment that comes in contact Y with the bag, namely the nipple 28, is easily removed from the tube 22 for sterilization purposes.

The use of the device is as follows:

Assuming that the patient 30 is in a reclining position, the bag which is connected to the tank 23 by means of the tube 22, is connected either to the member I I or the nipple 28. The breathing opening III-A is then placed over the mouth 3I and the nose 32 of the patient 3E! and the iiaps I and I I are 'held against the' cheeks 33 by means of the fingers 34 or in any other manner as previously suggested.

It will be noticed in Fig. that the edge 6 of the bag I is close to the patient so that when gas from the tube 22 inflates the bag I, it distends laterally Without placing any stress on the tube 22 or to the fastening with the bag I, or causing the bag I to attempt to break away from its facial connection. It can also be seen that the con dition thus brought about will be productive of the utmost amount of comfort for the patient and convenience for the doctors and nurses and attendants, and at the same time the unpleasant contemplation of using a rebreathing bag which may not have been completely sterilized either inadvertently or through lack of vtime or facili- This form of the detates, is completely avoided, and the patient is assured that the bag being used is exclusively private.

The purposes and advantages of rebreathing bags are so well understood in the art that they will not be explained here, it being understood, of course that the amount and kind of gas admitted to the bag I are under the control of the attendant. p

Attention is drawn to my co-pending application, Serial No. 366,157, filed November 18, 1940, over which this device is an improvement.

I claim:

1. A paper rebreathing bag having four closed edges, one of which is provided with a closed notch, and having a breathing opening at one corner, adjacent to said notch, and a gas inlet opening at a second corner adjacent to said notch. said-gas inlet opening having a perforated reinforcement associated therewith and a threaded nipple adapted to be screwed into the opening in said reinforcement and thereby `attached to said paper bag.

2. A rebreathing bag consisting of a substantially rectangular paper bag, having two opposite sides creased to permit same to collapse outwardly and having gas inlet openings and breathing openings at opposite ends of the bag adjacent to one of said creased sides, the creased side nearest said openings having a notch formed therein, the edges of which are closed by means of seams, the seam nearest the breathing opening contacting the under side of the users chin, the breathing end of said bag having a closing seam across the major portion of its'width, one end of which curves outwardly to the line of users nose, substantially in Vparallelism with the chin engaging FLORENCE L. SHELTON. 

